SOLUTION: A pharmacist wants to mix a 6% solution with 5 liters of a 12% solution to get a mixture that is an 8% solution. How much of the 6% solution should he use?

Question 820522: A pharmacist wants to mix a 6% solution with 5 liters of a 12% solution to get a mixture that is an 8% solution. How much of the 6% solution should he use?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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12*5 + 6v = 8(v + 5)
60 + 6v = 8v + 40
2v = 20
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v = 10 liters
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